WordPress Mollom plugin tutorial

The Mollom plugin for WordPress was contributed by Matthias Vandermaesen. It requires at least WordPress 3.1.0.


  1. Log in to your Mollom.com account, or create a new account if you don't have one yet.
  2. Go to "Manage sites" from the upper right navigation.
  3. Click "Add subscription" to create API keys for your website (or add a site to your existing subscription).
  4. Download the plugin from the Mollom plugin project page.
  5. Extract the mollom folder in the tarball into /wp-content/plugins/.
  6. In your WordPress dashboard, disable the Akismet, CAPTCHA, and other spam-filtering plugins you might have enabled.
  7. Activate the Mollom plugin.


  1. Go to the "Mollom" page in the "Settings" section in your WordPress dashboard.
  2. Enter the public and private API key for your site by copying them from your Mollom.com Site manager.

Copy the API keys for your site from Mollom.com to your WordPress plugin settings.

After configuring your API keys, Mollom will automatically protect your blog.

You can adjust the Mollom protection in the plugin settings:

Mollom plugin protection options.

  • Checks: Choose which checks you want Mollom to perform.
  • Unsure: Select the desired behavior in case Mollom is unsure; either show a CAPTCHA (recommended) or accept the post.
  • Bypass roles: Choose which user roles of your WordPress site should not be checked by Mollom. You might want to exlcude yourself by selecting e.g. Administrator.
  • Fallback mode: Choose what to do with posts in case Mollom is temporarily down or unreachable. Upgrade your Mollom subscription to paid plan to reduce potential downtime.
  • Privacy policy: Allows you to disable the link to Mollom's privacy policy in case your own privacy policy covers all data privacy aspects related to the Mollom service already.

The Mollom plugin respects the general WordPress Discussion settings, so you want to review and potentially adjust those:

Check your WordPress Discussion settings.


Mollom deeply integrates with WordPress' regular commenting behavior.

  1. Spam comments are discarded and not accepted on your site.
  2. Ham (not spam) comments are accepted and put into your comment moderation queue (if applicable).
  3. If Mollom is unsure, the author is asked to solve a CAPTCHA (word verification). If the CAPTCHA is not solved correctly, the author is presented a new one and asked to try again.

When moderating comments on your WordPress comment moderation pages, the plugin automatically sends corresponding feedback to Mollom.